Let's divide 645619 by 68
The aim is to understand the frequency of 68 in 645619.

Step 1:
When dividing 6 by 68, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 68

Advancing to step 2:
The number 68 fits into 64 0 times, leaving a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Take the next digit (5) from the dividend and append it to 64, then repeat: 645 / 68

Advancing to step 3:
The number 68 fits into 645 9 times, leaving a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 612 from 645 and we're left with 33.
Grab the next digit (6) from the dividend, add it to 33, then carry on: 336 / 68

Let's proceed to step 4:
336 divided by 68 is 4 with a remainder of 64.
The number 4 becomes the next digit in our result. 
Result so far: 94.0
If we subtract 272 from 336, we get 64.
Fetch the next digit (1) from the dividend, attach it to 64 and continue: 641 / 68

Going ahead to step 5:
If we divide 641 by 68, we get 9 and a remainder of 29.
Use 9 as the next digit of our solution. 
Result so far: 949.0
Subtract 612 from 641 to get 29.
Include the next digit (9) from the dividend after 29, then repeat: 299 / 68

On to step 6:
If we divide 299 by 68, we get 4 and a remainder of 27.
Write down 4 as next digit of the result. 
Result so far: 9494.0
Subtracting 272 from 299 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
270 divided by 68 is 3 with a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 9494.3
If we subtract 204 from 270, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 8:
68 goes into 660 9 times with a remainder of 48.
The number 9 becomes the next digit in our result. 
Result so far: 9494.39
If we take 612 away from 660, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 9:
480 divided by 68 is 7 with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 9494.397
If we take 476 away from 480, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
68 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 9494.397
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 11:
400 divided by 68 is 5 with a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 9494.39705
Subtracting 340 from 400 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 12:
68 can be fit into 600 8 times, resulting in a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 9494.397058
If we subtract 544 from 600, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 13:
The number 68 fits into 560 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 9494.3970588
If we subtract 544 from 560, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 9494.3970588 with a remaining 1.6e-07.